Diffusion Coatings for Corrosion-Resistant Components in Coal Gasification Systems

Technical Report · Sat Sep 30 04:00:00 EDT 2006

DOI:https://doi.org/10.2172/895923· OSTI ID:895923

Krishnan, Gopala N ^[1]; Malhotra, Ripudaman; Alvarez, Esperanza; Lau, Kai-Hung; Mariano, Jordi Perez; Sanjurjo, Angel

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1. Sri International

Heat-exchangers, particle filters, turbines, and other components in integrated coal gasification combined cycle system must withstand the highly sulfiding conditions of the high temperature coal gas over an extended period of time. The performance of components degrades significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low-cost alloy may improve its resistance to such sulfidation attack, and decrease capital and operating costs. The alloys used in the gasifier service include austenitic and ferritic stainless steels, nickel-chromium-iron alloys, and expensive nickel-cobalt alloys. The primary activity this period was preparation and presentation of the findings on this project at the Twenty-Third annual Pittsburgh Coal Conference. Dr. Malhotra attended this conference and presented a paper. A copy of his presentation constitutes this quarterly report.

• Research Organization: Sri International
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-03NT41616
• OSTI ID: 895923
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
36 MATERIALS SCIENCE
ALLOYS
COAL
COAL GASIFICATION
COATINGS
COMBINED CYCLES
CORROSION
CORROSION RESISTANCE
DIFFUSION COATING
DIFFUSION COATINGS
STAINLESS STEELS